feat(adsense): add the ability to disable the ad

app/portainer/views/settings/settings.html

@@ -12,7 +12,7 @@
           <div class="form-group">
             <div class="col-sm-12">
               <label for="toggle_donation" class="control-label text-left">
-                Disable donation header
+                I have donated to Portainer's development, so I wish to disable the ad and donation header.
               </label>
               <label class="switch" style="margin-left: 20px;">
                 <input type="checkbox" name="toggle_donation" ng-model="formValues.donationHeader"><i></i>

app/portainer/views/sidebar/sidebar.html

@@ -64,7 +64,7 @@
         </div>
       </li>
     </ul>
-    <center>
+    <center ng-if="applicationState.application.displayDonationHeader">
       <div class="ads" ng-if="toggle">
         <adsense ad-client="ca-pub-7198891301481203" ad-slot="8992247096" inline-style="display:inline-block;width:100%;height:100%"></adsense>
       </div>